This can be done you just need to determine if changing it in the post is the best way for you to do it or not. If you do not have a large number of programs already for your machine tool you might be better off changing them in the machine to match the standard right hand rule. If you want to do it in the post processor you can though. I have done it several times and it seems to work great.
I am not going to tell you exactly how because I do not know your post, but to reverse the sign of a variable you use the logic below.
xabs is my variable for this example.
xabs = xabs * -1
This will take the value of xabs and change it from positive to negative or from negitive to positive. This is the easy part. The hard part is making sure you have this in the right location of your post. Where you need to put it will vary based on if your post supports rotary logic or not. Typically this is done where the XYZ and IJK matrix is mapped to the current plane.
I strongly sudgest you take this information to your Mastercam dealer and request this change. They should be able to make this change for you.
Thanks and I hope this helps
PS You have a PM
AC  |